OSUR's three largest insider shareholders as of May 23, 2026 are Manner Carrie Eglinton (President Ceo, 2.19Mn shares), Kenneth J Mcgrath (Chief Financial Officer, 589.56K shares), Kathleen Gallagher Weber (Chief Product Officer, 391.21K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Jack E Jerrett | Svp General Counsel Amp; Cco | 124,555 | 0 | 03 Jan, 2022 |
| Eamonn P Hobbs | Director | 61,452 | 0 | 18 May, 2022 |
| Ronny B Lancaster | Director | 104,782 | 0 | 29 Aug, 2022 |
| Stephen S Phd Tang | President And Ceo | 349,793 | 0 | 03 Feb, 2022 |
| James A Datin | Director | 82,146 | 0 | 16 May, 2024 |
| Michael Celano | Director | 111,823 | 0 | 16 Aug, 2022 |
| Anne Clem Whitaker | Director | 23,840 | 0 | 17 May, 2023 |
| Robert W. Mcmahon | - | 99,919 | 0 | 04 Aug, 2025 |
| Mara G. Aspinall | Director | 178,758 | 0 | 15 May, 2025 |
| Manner Carrie Eglinton | President Ceo | 2,190,874 | 0 | 23 Mar, 2026 |
| John P. Kenny | - | 163,608 | 0 | 19 Dec, 2025 |
| Kathleen Gallagher Weber | Chief Product Officer | 391,206 | 0 | 04 Mar, 2025 |
| Michele Marie Anthony | Svp Finance Cao | 185,788 | 0 | 19 Mar, 2026 |
| David Shulkin | Director | 126,335 | 0 | 15 May, 2025 |
| Lisa Nibauer | President Of Diagnostics | 123,479 | 0 | 12 May, 2022 |
| Lelio Marmora | Director | 130,760 | 0 | 15 May, 2025 |
| Scott Gleason | Interim Cfo/Svp Ir | 96,509 | 0 | 24 May, 2022 |
| Nancy J Gagliano | Director | 160,254 | 0 | 02 Dec, 2025 |
| Agnieszka Gallagher | General Counsel Amp; Cco | 90,584 | 0 | 03 Feb, 2022 |
| Kenneth J Mcgrath | Chief Financial Officer | 589,562 | 0 | 23 Mar, 2026 |
| Steven Kyle Boyd | - | 38,462 | 0 | 30 Mar, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 26 Mar, 2026 | Steven Kyle Boyd | Common Stock | A | 5,246 | $3.10 | 39,878 | D | A |
| 26 Mar, 2026 | Steven Kyle Boyd | Common Stock | D | 1,416 | $3.10 | 38,462 | D | F |
| 20 Mar, 2026 | Manner Carrie Eglinton | Common Stock | A | 32,300 | $2.93 | 2,190,874 | D | P |
| 20 Mar, 2026 | Kenneth J Mcgrath | Common Stock | A | 32,300 | $2.93 | 589,562 | D | P |
| 01 Mar, 2026 | Michele Marie Anthony | Common Stock | A | 14,183 | $0.00 | 157,685 | D | A |
| 01 Mar, 2026 | Michele Marie Anthony | Common Stock | D | 4,062 | $3.04 | 153,623 | D | F |
| 01 Mar, 2026 | Michele Marie Anthony | Common Stock | D | 10,817 | $3.04 | 142,806 | D | F |
| 02 Mar, 2026 | Michele Marie Anthony | Common Stock | A | 42,982 | $0.00 | 185,788 | D | A |
| 13 Mar, 2026 | Kenneth J Mcgrath | Common Stock | A | 22,021 | $3.00 | 557,262 | D | P |
| 13 Mar, 2026 | Manner Carrie Eglinton | Common Stock | A | 22,022 | $3.00 | 2,158,574 | D | P |
| 01 Mar, 2026 | Manner Carrie Eglinton | Common Stock | A | 129,032 | $0.00 | 1,959,859 | D | A |
| 01 Mar, 2026 | Kenneth J Mcgrath | Common Stock | A | 26,814 | $0.00 | 475,277 | D | A |
| 01 Mar, 2026 | Manner Carrie Eglinton | Common Stock | D | 56,116 | $3.04 | 1,903,743 | D | F |
| 01 Mar, 2026 | Kenneth J Mcgrath | Common Stock | D | 7,639 | $3.04 | 467,638 | D | F |
| 01 Mar, 2026 | Kenneth J Mcgrath | Common Stock | D | 20,745 | $3.04 | 446,893 | D | F |
| 01 Mar, 2026 | Manner Carrie Eglinton | Common Stock | D | 122,655 | $3.04 | 1,781,088 | D | F |
| 02 Mar, 2026 | Manner Carrie Eglinton | Common Stock | A | 355,464 | $0.00 | 2,136,552 | D | A |
| 02 Mar, 2026 | Kenneth J Mcgrath | Common Stock | A | 88,348 | $0.00 | 535,241 | D | A |
| 17 Dec, 2025 | John P. Kenny | Common Stock | A | 10,286 | $2.46 | 163,608 | D | A |
| 28 Oct, 2025 | Steven Kyle Boyd | Common Stock | A | 34,632 | $0.00 | 34,632 | D | A |